feat: better error handling for baseline downloading

Author: isabel-anastasiadis-boost

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    codeclimate_diff (0.1.6)
+    codeclimate_diff (0.1.7)
       colorize
       json
       optparse

lib/codeclimate_diff/downloader.rb

@@ -8,19 +8,34 @@ def self.refresh_baseline_if_configured
       return unless CodeclimateDiff.configuration["gitlab"]
       return unless CodeclimateDiff.configuration["gitlab"]["download_baseline_from_pipeline"]
 
-      puts "Downloading baseline file from gitlab"
+      personal_access_token = ENV.fetch("CODECLIMATE_DIFF_GITLAB_PERSONAL_ACCESS_TOKEN")
+
+      if !personal_access_token
+        puts "Missing environment variable 'CODECLIMATE_DIFF_GITLAB_PERSONAL_ACCESS_TOKEN'. Using current baseline."
+        return
+      end
+
+      puts "Downloading baseline file from gitlab..."
       branch_name = CodeclimateDiff.configuration["main_branch_name"] || "main"
       project_id = CodeclimateDiff.configuration["gitlab"]["project_id"]
       host = CodeclimateDiff.configuration["gitlab"]["host"]
       baseline_filename = CodeclimateDiff.configuration["gitlab"]["baseline_filename"]
-      personal_access_token = ENV.fetch("CODECLIMATE_DIFF_GITLAB_PERSONAL_ACCESS_TOKEN")
 
       # curl --output codeclimate_diff_baseline.json --header "PRIVATE-TOKEN: MYTOKEN" "https://gitlab.digitalnz.org/api/v4/projects/85/jobs/artifacts/main/raw/codeclimate_diff_baseline.json?job=code_quality"
       url = "#{host}/api/v4/projects/#{project_id}/jobs/artifacts/#{branch_name}/raw/#{baseline_filename}?job=code_quality"
       response = RestClient.get(url, { "PRIVATE-TOKEN": personal_access_token })
-      File.write("codeclimate_diff_baseline.json", response.body)
+
+      if response.code < 300
+        File.write("codeclimate_diff_baseline.json", response.body)
+        puts "Successfully updated the baseline."
+      else
+        puts "Downloading baseline file failed with status code #{response.code}: #{response.body}"
+        puts "Using current baseline."
+      end
+
     rescue StandardError => e
       puts e
+      puts "Using current baseline."
     end
   end
 end

lib/codeclimate_diff/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module CodeclimateDiff
-  VERSION = "0.1.6"
+  VERSION = "0.1.7"
 end